2001 INFINITI QX4 tires

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Page 1747 of 2395

INFINITI QX4 2001 Factory Service Manual Wheels & Tires ..........................................................44
LIFTING POINTS AND TOW TRUCK TOWING...........45
Screw Jack ................................................................

Page 1789 of 2395

INFINITI QX4 2001 Factory Service Manual Wheels & TiresNBGI0007S04
Grade Road wheel/offset mm (in) Tire Spare tire size
LE17 x 8JJ Aluminum/20 (0.79)
16 x 7JJ Aluminum/20 (0.79)*P245/65R17 105S
P245/70R16 106S*P245/65R17 105S
* Option for 2W

Page 1994 of 2395

INFINITI QX4 2001 Factory Service Manual Symptom Check items
Except cool-
ing system
parts mal-
functionÐ Overload on engineAbusive drivingHigh engine rpm under
no load
Driving in low gear for
extended time
Driving at extremely high
speed
P

Page 1999 of 2395

INFINITI QX4 2001 Factory Service Manual NBMA0003
General maintenance includes those items which should be checked during the normal day-to-day operation
of the vehicle. They are essential if the vehicle is to continue operating properly. Th

NBMA0003
General maintenance includes those items which should be checked during the normal day-to-day operation
of the vehicle. They are essential if the vehicle is to continue operating properly. The owners can perform
checks and inspections themselves or they can have their INFINITI dealers do them.
OUTSIDE THE VEHICLE
The maintenance items listed here should be performed from time to time, unless otherwise specified.
ItemReference page
TiresCheck the pressure with a gauge periodically when at a service station,
including the spare, and adjust to the specified pressure if necessary. Check
carefully for damage, cuts or excessive wear.Ð
Wheel nutsWhen checking the tires, make sure no nuts are missing, and check for any
loose nuts. Tighten if necessary.Ð
Tire rotationTires should be rotated every 12,000 km (7,500 miles). MA-24
Wheel alignment and
balanceIf the vehicle pulls to either side while driving on a straight and level road, or
if you detect uneven or abnormal tire wear, there may be a need for wheel
alignment. If the steering wheel or seat vibrates at normal highway speeds,
wheel balancing may be needed.MA-24, SU-6, ªFront
Wheel Alignmentº
Windshield wiper
bladesCheck for cracks or wear if they do not wipe properly. Ð
Doors and engine
hoodCheck that all doors and the engine hood operate smoothly as well as the
trunk lid and back hatch. Also make sure that all latches lock securely. Lubri-
cate if necessary. Make sure that the secondary latch keeps the hood from
opening when the primary latch is released.
When driving in areas using road salt or other corrosive materials, check
lubrication frequently.MA-27
INSIDE THE VEHICLE
The maintenance items listed here should be checked on a regular basis, such as when performing periodic maintenance, cleaning the
vehicle, etc.
ItemReference page
LampsMake sure that the headlamps, stop lamps, tail lamps, turn signal lamps, and
other lamps are all operating properly and installed securely. Also check
headlamp aim.Ð
Warning lamps and
buzzers/chimesMake sure that all warning lamps and buzzers/chimes are operating properly. Ð
Windshield wiper
and washerCheck that the wipers and washer operate properly and that the wipers do
not streak.Ð
Windshield defrosterCheck that the air comes out of the defroster outlets properly and in sufficient
quantity when operating the heater or air conditioning.Ð
Steering wheelCheck that it has the specified play. Be sure to check for changes in the
steering condition, such as excessive play, hard steering or strange noises.
Free play: Less than 35 mm (1.38 in)Ð
SeatsCheck seat position controls such as seat adjusters, seatback recliner, etc. to
make sure they operate smoothly and that all latches lock securely in every
position. Check that the head restrains move up and down smoothly and that
the locks (if equipped) hold securely in all latched positions. Check that the
latches lock securely for folding-down rear seatbacks.Ð
Seat beltsCheck that all parts of the seat belt system (e.g. buckles, anchors, adjusters
and retractors) operate properly and smoothly and are installed securely.
Check the belt webbing for cuts, fraying, wear or damage.MA-28, RS-7, ªSeat Belt
Inspectionº
BrakesCheck that the brake does not pull the vehicle to one side when applied. Ð
GENERAL MAINTENANCE
MA-4

Page 2019 of 2395

INFINITI QX4 2001 Factory Service Manual SMA632C
SMA631C
Changing Differential Gear OilNBMA00271. Drain oil from drain plug and refill with new gear oil.
2. Check oil level.
Oil grade and viscosity:
See ªRECOMMENDED FLUIDS AND LUBRICATNSº,

Page 2028 of 2395

INFINITI QX4 2001 Factory Service Manual Noise, Vibration and Harshness (NVH)
Troubleshooting
=NBPD0049NVH TROUBLESHOOTING CHARTNBPD0049S01Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these p

Page 2187 of 2395

INFINITI QX4 2001 Factory Service Manual NBST0043
NVH Troubleshooting ChartNBST0043S01Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
Reference pageST-8
ST-9
ST-21
ST-21
ST-21
ST-8

Page 2190 of 2395

INFINITI QX4 2001 Factory Service Manual CAUTION:
Do not hold the steering wheel in a locked position for more
than 15 seconds.
4. If fluid leakage at connectors is noticed, loosen flare nut and
then retighten.
Do not overtighten connector a

CAUTION:
Do not hold the steering wheel in a locked position for more
than 15 seconds.
4. If fluid leakage at connectors is noticed, loosen flare nut and
then retighten.
Do not overtighten connector as this can damage O-ring,
washer and connector.
5. Check rack boots for accumulation of power steering fluid.
Bleeding Hydraulic SystemNBST00131. Raise front end of vehicle until wheels are clear of the ground.
2. Add fluid into oil tank to specified level. Then, quickly turn
steering wheel fully to right and left and lightly touch steering
stoppers.
Repeat steering wheel operation until fluid level no longer
decreases.
3. Start engine.
Repeat step 2 above.
IIncomplete air bleeding will cause the following to occur. When
this happens, bleed air again.
a) Air bubbles in reservoir tank
b) Clicking noise in oil pump
c) Excessive buzzing in oil pump
Fluid noise may occur in the valve or oil pump. This is common
when the vehicle is stationary or while turning steering wheel
slowly. This does not affect performance or durability of the system.
SST491B
SST090B
Checking Steering Wheel Turning ForceNBST00141. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering fluid up to adequate operating tempera-
ture. [Make sure temperature of fluid is approximately 60 to
80ÉC (140 to 176ÉF).]
Tires need to be inflated to normal pressure.
4. Check steering wheel turning force when steering wheel has
been turned 360É from the neutral position.
Steering wheel turning force:
39 N (4 kg, 9 lb) or less
5. If steering wheel turning force is out of specification, check
rack sliding force.
a. Disconnect steering column lower joint and knuckle arms from
the gear.
b. Start and run engine at idle to make sure steering fluid has
reached normal operating temperature.
c. Pull tie-rod slowly to move it from neutral position to±11.5 mm
(±0.453 in) at speed of 3.5 mm (0.138 in)/s. Check that rack
sliding force is within specification.
Rack sliding force:
137 - 255 N (14 - 26 kg, 31 - 57 lb)
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
RS
BT
HA
SC
EL
IDX
ON-VEHICLE SERVICE
Checking Fluid Leakage (Cont'd)
ST-9

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